Pumping apparatus.



R. CONRADER.

PUMPING APPARATUS.

APPLIUATION FILED JUNE 24, 1909.

Patented Mar. 4, 1913.

2 SHEETS-SHEET l.

R. CONRADBR. PUMPING APPARATUS.

APPLICATION FILED JUNE 24, 1909.

1,055,1 39. Patented Mar. 4, 1913.

2 SHEETS-SHEET 2.

RUDOLPH CONRADER, OF ERIE, PENNSYLVANIA.

Specification of Letters :Patent Application filed June 24, 1909. Serial No. `504,190.

' PUMPING APPARATUS.

Patented Mar. 4, 1913.

To all whom t may con-cern:

Be it known that I, RUDOLPH CONRADER, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in Pumping Apparatus, of which the following is a specification.

This invention relates to pumping apparatus and consists in certain improvements in the construction thereof, as will be hereinafter fully described and pointed out in the claims.

The object of the invention is to control the motor driving a pump so that as the pump is unloaded, the speed ofthe motor will bev similarly varied, or, in other words, to so control the motor that its power will vary as the charges pumped vary.

In a former application by me, filed September 25th, 1905, patented October 19, 1909, No. 937,228, I have connected a pump governor and a relief device so that the same reduction in receiver pressure acts similarly on both the governor and the relief device. This requires a nice adjustment of the two mechanisms to get a corresponding result. I have found that by arranging a relief de- 'vice on the intake of the pump, and then controlling the speed governor by variations in the intake pressure, this nicety of adjustment is entirely void, and all that is necessary to get the proper regulation, after the initial adjustment, is to regulate the relief device. In'the completed mechanism, therefore, the relief device closes, more or lless, the intake of the compressor. This, vof course, reduces the pressure at the intake. If there is a complete closure, at the intake, the pressure will be so reduced as to nearly form a vacuum, dependingsomewhat upon the clearance of the pump. The load of the pump is proportioned to this pressure. In other words, each charge is proportioned to the pressure at which the discharge stroke commences. Of course, if there were a complete vacuum, no fluid'whatcver would be discharged; on the other hand, if there is no reduction in pressure at the intake, there will be a full charge expelled with each stroke. In this apparatus, therefore, the governor or controlling device for the motor is controlledby this reduction in pressure, and in the specific mechanism shown, the controlling device is actuated by atmospheric pressure as opposed to the reduced pressure in the'intake.

The invention, as illustrated, in the accompanying drawings, is as follows:

Figure lshows a side elevation, partly in sect-ion, of the apparatus. Fig. 2, an end elevation of the governor. Fig. 3 is a sec tion through the governor body and motor controlling valve.

The governor herein shown is similar in many respects to that shown by me in a patent issued November 22, 1904, No. 7 7 5,391, and the relief device is that shown and described by me in an application filed December 26th, 190e, serial No. 349,519.

1 marks the steam cylinder; 2, the piston rod; 3, the pitman; 4, a fly wheel; 5, the pump cylinder; 6, the intake; and 7, the discharge pipe, which, for the purpose of this application, may be considered as the receiver.

The relief device is made up of the body the cylinder 15, the cylinder extending from the body of the relief device. The cylinder` 15 has the cap 16 from which extends the cylinder 17. The piston 18 is arranged in the cylinder 17. A cap 19 is arranged on the stem 12, and operates against the piston 18. Spring 20 is tensioned between the guide piece 13 and the cap 19,. and opposes the' movement of the piston to close the valve. yThe cylinder 17 is connected by a passage 21 y with a leak chamber 22. Ihe leak chamber has the `vent 23 of minute size. The passage 24 leads to the leak chamber 22, and the needle 25 controls the passage 24. The needle valve is carried by the piston 2G. The

piston 26 is arranged on the cylinder 2 7.V

A spring 28 opposes the movement .of the piston. The tension of this spring 1s controlled by the screw 29. The cylinder 27 1s provided with an inlet 30'between the'passage 24 and the pist-on 26, so that the plston 26 is subjected to receiver pressure, the inlet being connected with the pipe 7 by the pipe 31. This relief device operates in the manner described in my before mentioned application. passes through the body against the closing The Huid passing to the intake 6- movement of the valve 11. As the'receziver pressure rises, the piston 26 is operated, and opens the needle valve 25.A This admits pressure to the cylinder 17. If the pressure in the receiver is so low as to openthe needle valve but slightly, the vent 23 prevents leakage in such proportion that but slight presy'governor body has the steam inlet 32bv and the steam outlet 3 2C leading to'themotor.

. The governor frame 33 is attached to the I 50. The'guide50 slides in a projection 5l l on theyoke 34, and the governor body, and has the usual yoke 34.-

The governorhead 35 is journaled in the top of the yoke, and carries the weights 36. These are pivoted at `37 and areI connected stem 40. The stem 40 'is stepped on the yoke.` 41, and the yoke41 is ixed on the stem 42 of the valve 32a. The head is driven through the gears 35a and 35", the 4gear 35b being fixed on the shaft 35c which isk pro vided with` the 'belt pulley 35d.

element of the governor.

means of the pin 44, and its end extends into the yoke 41'. The outer end of the lever 43 supports a rod 45. Springs l46 and 4 6a are` arranged around the rod, and the frame 47 has its side parallel with the rod,

and its top above the springs, the initial ,ti-on of a pump; a motor actuating the tension of the springs being adjustedl by the screw 48. These springs form the actul,

intake of the p-u'mp;','a controlling mechainism for the motor, adapted tomaintain ating part of the centripetal element.- The frame' 47 is mountedon the guides 49 and v guideA 39 extends upwardly from 'the top 60 of the governor motor. A yoke 52 extends from the frame 47 around the cylinder l58. A spring supporting cup '-53 is screwed into the bottom a ition of a pump; a motor actuating the of this yoke, and thesteml 55 screws'into this spring supporting cup, and extends upby thefprojection59.' Thespring 6'1v is of the cylinder.' Avent 63 permitsl the` ad-` missionfof4 air'v through this head. A pipe 64 leads 'from the intake 6 tothe intake y65 `of the'cylinder58,-so that the cylinder has i the pressure of the intake. A piston 57 is subject at one side, (the top) to the intake pressure anden the opposite side to the atmospheric pressure. Oil is preferably delivered throu h a small elbow 66, and maintains some slight elevation in the cylinder. This makes a liquid seal on the piston and Ithe centripetal element so that the adjusted speed of the governor is reduced; in other words, the centripet-al element is varied within the limits of the power of the centrifugal element, but theA centrifugal ovcrnor still has control of the mechanism,v

and with the increase of pressure at the intake, the reverse movement of the lparts takes place and the governor is speeded up. y Ihe spring 61 should Ibe of sufficientl by the links 38 with the cross head l39 -on the 'be noted that after the initial adjustment,' all that is necessary to vary the pre-determined receiver pressure is to vary. the relief l device. The governing mechanism will follow this, and take care of itself entirely.- These I weights are driven, forming the centrifugal tion of a pump; a motor actuating the A lever 43 is pivoted in the yoke 34 by intake of the pump; a controlllng mecha- .hism controlling the speed of the motor;- and means controlled by the pressure at the strength to overcome the spring 46a. It will What I claim as'new is: 1. In a pumping apparatus, the combinapump; a relief device operatin upon rthe intake of the pump for varying the action f of the controlling device.

2. In a pumping' apparat-us, the combinapump; a relief device operating upon the different speeds between the desired maxi- 'mum and minimum; and means controlled bythe pressure at the intake 4ofthe pump lfor varying the action of the controlling mechanism.

3. In a pumping apparatus, the combinapump; a relief device operating upon the nism, for the motor, comprising a centrifugal governor; and means controlled by the y pressure at the intake for varying the action ,tensioned between the spring' cup of the l yoke, and head 62, arranged in the bottom of the governor.

tion of a pump; a motor actuating the pump; a relief device operating upon the intake of the pump; a centrifugal governor controlling the motor, said motor having a 'l i centrifugal element and a centripetal elef pump; a relief device operating ment, opposed to each other; and means controlled by the pressure at the intake for varying the ower of one of said governing elements wit in the limits of the power of the other of said elements. 1

5. In a pumping apparatus, the combination of a pump; a motor actuating the upon the intake of the pump; a controlllng mechanism for the motor; and means controlled bythe pressure at the intake for varyin the controlling mechanism to vary the Spee of the motor as the charges of the pump vary. y

6. In a pumping apparatus, the combination of a pump; a motor actuating the pump; a relief device operating on the intake of the pump and controlllng the speed t of the motor; and means controlled by the pressure at the intake of the pump for varying the different speeds between the desired maximum and the desired minimum, varyi ing as the charges pumped vary.

In a pumping apparatus,` the combination of a pum a motor actuating the ump; -a relief evice operating upon the intake of the pump; a controlling mechanism for the. motor comprising a centrifugal governor; and means controlled by the" supply of fluid thereto, a motor for driving the pump and a motor regulator under'control of the reduction in pressure in the pump intake.

l0. In combination, a compressing pump,

a motor for driving it, a regulator for varying the pressure in the pump intake and a regulator for the motor controlled by variations in pressure in the pump intake.

11. In combination, a compressing pump,

a fluid pressure operated motorfor drivingy it, a regulator for varying the pressure in the pump intake and a regulator for theA motor pressure fluid supply, controlled by variations in pressure in the pump intake.

l2. In comblnation, a compressing pump,

a steam operated motor for driving it, a regulator for varying the pressure in the pum intake and a re lator for the steam supp y controlled by sure in the pump intake. y 13. In combination, a compressing pump,

it, a choking controller valve for o eni'ng and closing the pum Iintake and a c oking controller valve for t e motor pressure fluid sup ly, controlled by variations in pressure in `,t e ump intake due to the operation of the, cho ring controller valve for the pump.`

14. In combination, a compressing pump,

t e variations in pres-4 a fluid pressure operated motor for driving it, a choking controller valve for reducing the pressure in the-pump intake and means controlled by a reduction of pressure in the pump intake'for cutting off the fluid pressure supply to the motor.

15. In combination, a compressing pump, a fluid pressure operated motor for driving it, a choking controller valve operated by Vso an ,increase in pressure on the discharge side of the pump for cutting off the su ply on the intake side of the pump, where y a reduction of pressure is produced in the pump intake and means controlled by the reduction of pressure in the pump intake for cutting off the fluid pressure supply to the motor.

In testimony whereof, I havey hereunto set -my hand in the presence of two subscribing Witnesses.

RUDOLPH CONRADER.

Witnesses:

C. D.. HIGBY, H. C. Loan.

65 a fluid pressure operated motor for driving 

